Ophthalmic test-lens frame



un 1927. Y J e c. M. STEVENSON OPHTHALMIC TEST LENS FRAME- Filed July 11, 1922 3 Sheets-Sheet, 1

INVEN TOR. weizwflaemoiz n 92 I 1 631 559 8 c. M. STEVENSON OPHTHALMIC TEST LENS FRAME Filed July 11, 1922 :5 sheets-sheet 2 W V. INVENTOR. II ifllli Chem/Zfaqmara %';A TTORNEY I June 7, 1927. I 1,631,559

C. M. STEVENSON OPHTHALMIC TEST LENS FRAME Filed. July 11. 1922 s Shee ts-Sheet 3 I a a i .15 m i5 Z3 45 ab" 16 l 164745 '5 a! Z2 V mun 4 '65 74 69 50 76 51 INVENTOR.

" 'otthe specific zition. 7

i inner i of one ofthe temfile b ows.

I v I Patented Ju ne 7, e i

' iii licauon fiiea my 11, 1 3 22: isr'iai itqfsi mov."

W -Th'i's inventien' rel-ates to ap-p'afatusfor. testing.therrefmction o-f ahpati'ents eyesl and-indicating the data-required for fitti ig,

glasses and inoie pilltticulzii'lyto frame 5 means apphcable to'the Tp atients head for V interchangeably iipportingr1a1 v lenses'jln properpesitions before the eyes; 1 Thechief I object o f ith'e invention is" to provide efiiz 'cient frame niezms of the above charaeter fully :a nd readily adjfietable *to shit :the

bodied in *5 simple. fohn f -:c0nst ructih- 1 I Whmh'is. light in weight, convenient to "a tjust and cap able of being"'economica'Hy-m;m

' ventionresides in'certain*im iOVementSend' combinations of parts alias will hei einafter be 'more". fully deeri'bed the "fiolvel features bein gfpoirited out'in'th'e' elain'is at the enci In the drawings showing in dotted lines'ja. different position to which the temple'b'ows may be adjusted; Fi ure 3 is a top 3piani-x' iew partly brekeii" Figure 4 a\vay;

F'g-uie 5 zrn enhu'gedjsection'al View,

' partly broken a tvay, (if 'olle'i 10f the temple l befi s tiken oil the line 59%5 of Figu-re' 13} is a rear .eleyzi-ti'oh partly Broken V. Figuie 6 iisJanenlarged"sectioiial'detailett 1 fview on the 1me ,6 '-t6 of Fi'glli'e 21;

V Figure? "sectional View thi'ough-the' 1IOS6pi8C and associated par'teflta'ken on the hnfe 7 i7 efFigurel-a Figure 8 is" a ectional "View fol lithe line Figure 11 is a" sectional detailed vie nparent 'f foma the abdve desci'iptibn that the I tidn ;.by a centra'l'tie membei' 17 and byftie izieiiiher s a l8fc'oiineeti i'g their "routeiwzen'ds,"

The 'ceiitra'l: tie 'fn' nl'bl '17: is generally of a rectanguimg Meek-like Sh'a-p'ekmd may he mad Iasft' casting, being rigidly fixedifinym any s tiitablezmannei at its 11 1pper and lower rfea r edges to the members 15 and lerespee The end tie membei' '18, as shown in? Figiuee 1" ahd 11, have the "genei fl term O f-$116117 barsh'oi'eda'dj'aeenteither end to receive the-' efaiblyhavethfehdedidpening"di'illedfdowm ward'ly therein through the ends etf ni'embei' 2O haying eo iive ientifinge pieees 21, and1er-:; ranged-. 00 begbrought their loweii 'ehd's' ,ifn t dampin .relati'ofi with tei phpie ce (iihat 212 shale-01yi eceivect'in a transverse as more fhHyfchsci ibedhereafter; Itlis'ap I bridge rmenihersilz? and :16 are rigidl'y con neeted togetherand adapted to"s'efve' a'slgi'ridelmmbers for a plurlity 'of'cro s-heatls 99 j siijc 'hng th'erebetween along the bridge-later i a'l-ly'df lthe frgimeifqreidjustably suppgl ting j the-"lens p'o ekete and "the teinple pieces as; 'described Hereaftef;' The meahs'for supbrtingl'thelensapoekets 9 reference numerals"thiolighout'i .4 ,-9and 10,preferablyin the form of rectangularbloc "s provided with spaced bores or bearingsslidably receiving the members '1' and 16, so that each head is slida'b'le ,la'terally along-the bridge toward vand fron'r wardifaceio'f" the: headf23, as by means of V serews"25,"1s;an angular plate 26 of relas" the eentral. memheral'i. Secured to the for tlvely light though llglCl form haV1ng ,.a

depending arm 27 supportingone of t'he'lens pockets .28., The latter H extends outwardly Q from'the arm in the general shape of a f semi-eircle open at its top and; comprises a plurality of spaced piu'allelzplates"29', 30 and 31supportedin' properrelation toeaoh other y as by means of studs 32 loeatedon theiarc i of a semi-circle and forming with the plates 29, 30 and 31 pockets forrec'eiving the test Q Llenses; Studs32 may also be extended for-' wardly of the p'ocketsfproper and provided withroneior. more grooves 33 Figure 2,.form- "ing additional lens receiving pockets. The c forward plate 29 is designated in'icircular degrees as at 34 to indicate :the angular displacement of a lens axis; Plate 29 has fixed therein-a sleeve 85, Figure 2,:througl 1,which extends a; rotary spindle36 having a'forward finger+piece37 1 and av rollerl38 in oneor'more v of the pockets for engagement, with the pe-- riph'ery of a lensto rotarily or. angular-1y adjust the ;-1atter,' the above descri ed pocket.

construct-ion being one Wellknown in the art and requiring no further description, 'further than to point out thatit permits of the convenient insertion" and removal of alens and ofl'angular adjustment-of the latter as 7 desired.

The lens pocket 27h'asfiited to its 3 "-"upper portion 26 a horizontallyextending arm 89 marked'with a suitableiscale 4L0 co- 3 operating with an index 41 marked adja-' cent the upper-end of a short bar 42 shownin Figures 4 and 6. Thisbar is preferably I ij )rovided;-adjacent its ends with openings receiving the guide members 15 land 16,; the

barfibeing fixed: inpositio'n' "0111 the latter as i I by {means ofpins. or, rivets-43 passed there,

through. The forward face of; the bar. is

recessed 'asatAA to provide a channel slid-" ably receivlng. and'supportingthe scalearm i y i 39,; "fwO'neof'thesebarsl42 is fixed in position f described: adjacent thecenterofeach half of the'bridgeland not onlycarries theindex "glam-k 41 described, but alsolserves as a stop limiting the outward "movement of f the lens pocket headsf23 and 24v and furthermore; serves to rigidly connectthe-guide members? 15 and 16. T

In. order that thelens pocketsmaybegiven' aifinef adj -Listing movement on the bridge by v ,theii-exertionofa comparatively"light'forceJ not likely to 'derange the position :of the I 7 frame, the sliding head 23 Vis preferably re v "eesseidasatlt5, Figu're 9, to provide a chain i berc rfor a pinion ftii fixed 1 on v a spindle 47 rotatablysupported in the blockiand provided forwardlythereof with a finger-piece L3 by means of which the pinion may-be conveniently rotated. The teeth ofthe latter mesh with rack teeth 49formed in the upperside of theglower guide memb'erltif j Finger-piece 4:8 inaybe rotated by a; slight effort and produces a'oom'paratively fine ad .justing movement of the lens pockets laterally of the frame which movement is indicated by, the seale .40 andindex 41.

The other lenspocket 4E9 carried byan M11150 depending from the head 24 on'the bridge is similarly construetedand similarly adjustable laterallyof the frame by afinge1- piece 51operating rackand pinion means :as

described above but this pocket is preferably adjustably{vertically also: relative 'to the bridge and to the first pocket to accommodate for any difference in elevation of'the p atients eyes'w To this Iendv head 24 an opening ingan upwardly "extending post 56 on the head 24; Arm '50 is provided with antelongated slot 57 embracing thespi-ndle 51 and it is apparent fronrthls construction that byturning finger-piece the pocket:

maybe given afine vertical adj usting movement, wh ch s indicated by a scale 58 on the arm, 6Xt61lS101152 and a cooperatlng lndex 59 on the block. a The latter has fixed thereon;

as inthei case of the other' pocket, a scale 60' cooperating with 'an index 61' on'i'a bar W 62 similar to tl 1ebar-' 42.

' The temple means vare supported laterally adjustable in the ends of the brid 'e each com'risin a head 63 Fl UI'G/S t) 7 b 7 23 land 12, channeled at its upper: and-lower ends to provide: bearings slidably engaging the members 15 and 16. Each head'63' is formed with a central opening ihiwhich the inner endof the temple-pieceior bar 22, prea 'viously referred to-1s-re ce1ve dfand secured.

as bymeansof a screw 64.; The temple piece 22 extends laterally outward from its head by and i and isslidably guided in the openingin the outer tie member 18. B0y0ntltl100111d of the bridgeeach temple piece is preferably 7 Q turned rearwardl-y as ati65 andthenc'e downwardly as at 66, 7 being" provided adjacent the horizontal center line of the pocket with means pivotally' supporting the temple bow,

such means preferably comprising an :env i 25 large d portion: 67 between which and a nut 68 on the lower end aofthe temple-piece is rotatably osupportedia 'sleeve69 provided with a cheek bearing plate 70, Figure 13. Sleeve 67 is' preferably formed with spaced shoulders one of; which is indicated'at. 71,

. dheek-plate "Z6 pivotally'secure'd as by means approxithe bows in the usual manner. The temple bow. preferably comprises extensible sections 74 and+75.- ""SBCtlOIl 74 is .PIOTv'ldQCl .withofascrew' 77- .to. the cheek plate "4 0,. to: pro- .vide for a swinging. movement in ayertical plane/ Theibow preferablyicarries a pawl 78, F igu-re 5, sliding longitudinallyin lugs 791.011 the lbowfand'pressed forwardly as by lineailsio'fa :SpringSO tol carryxits bevelled torward. end into engagement with. aserles .o'fxteethsl .on the periphery of bearing plate 705'f01 maintaining the temple in the desired position of vertical adjustment. v L T heirear end of the bow-section 74' carries tion 75.01 the bow slides and the .1'e'a1'.sec--. .tion alsocarries a s milar keeper-88 embrac- 1 "mg thesection 74,.sothatthe rear section a..guideo1r keeper. .82 in which the rear. sec- [75, which is preferably suitably curved for cngageinentoverj' the ear; -is*extensibl e to suit. the physical conformation of the patient. One. of' fthese" bow sectionsmay be provided" wit-ha scale i'ndicatedat84'and thet'other. with an. index for -indicating the position not L setting. and the-required measurement or dimensioii. Keeper 83 preterablyfcarries, a spring finger 8'6jhaving an angular fend -87 pas singgthrough "an opening ;8.8- i1i section 5 for cooperation with-spaced 1 reeesses 89; i-n-sejction 74', to form; a ;detent ,cl'ev'ice' It'is apparent from the above de- 'sc'riptionythat the bows are not .lonly adjust able laterally-dint;alsoverticallyas wellas i'erom front tioprear inaddition tothe hori "be adjusteclto position to maintain the frarneimyprop er. positlon on. any patient;

a The. .HOSGPIQCG. 1S preferably supported on.

Zontal folding movement, so that they may 7 the bi'idgefor adjustment. in bot'hwertica'l' and front to rear directions by cm'ea'nsrcom prising a threaded spindle :90 engaginga vertical bore ...1n the cent-rattlemember 17.

This spindle is rotatably supported. at its '-.iipp.erzendina head or part 91 .andat its 4 lower end in a. part 92, which parts are rigidly-connectedas. by means of spaced parallel bars 93.0ne-on eitherside of the threadi edspindle. The latter earriesa finger piece 9% at its upper end by the rotation of which.

:vertical limb formed by the rods 93 may be given precise fvertical adjustment I on the bridge member 17. The latter is preferably 9 provided with an index mark 95 cooperating with a suitable scale 96 marked on a plate 97 secured as by means of screws 98 to the part 91 andha'ving a .rearwardly turned lower end 99cembracing the rods. 93/ The ing' :a z orward =finger=pieee which it maybe rotated to adjust the nosepiece 1:0'3'fr0m fronttorear, which adjust? 7 meat indieatedby the scale lQGtzand in; q

formed. with bearings in: which are slidably received spacedparallel rods 1OQ..-FiXed"jf A I at the forward ends-jot thelatteriisacon- I p ends a part 102 onsiwhich, latter: nosepie'ce I necting. head. or part- 101 and at their. rear 103 of any, suitable -'.desoription is' piyoted as eat 10%. 5 Fixed at its forward end on part 1101 isa .fplate 10'5" having. .a' downwardly 1 turned rear end 106 securedtof the dorward side of part 102. .Thisplate'is marked with a suitable scale"lbti eoo'perating with fa-n in- Clo-X107. onythekpart 92 ;jwhichot course-is formed with anopeni ngj slidably eceiving the plate 105;; ,Rotatably'"supported part 101 and in the" downturned rear. end 106 of 111g ain jop'ening in part I It islapparent trom'the. above description that thegteriiple' bows. maybe extended or. .contracted laterallyf ot the bridge 1 and.-ad v j'usted vertically we'll as injlen'gth and the latter adjustmentis conveniently indie .catedffby the .scale. StQJ A'fter. such lateral adjustment-ithe hours may be. secu rely clamped in positionby turning the finger-J.

pieces 2-1 of-thescreivsJat: theaouterQ-ends of the bridge.- By turning finger-piece Q4;

abore the..-cent er of the bridge thenosepieee maybe adjusted Vertically, and "by turning iingenpiecelOS) it may beadjusted i rom' front tO rear, of which adjustments; are indicatedbysuitablescalemeans. Ehese arious adjust ents are ."q'ui'ckly' andfcon Yemently :j ma'de' and serve to support 1e.

fran-iesin c oi'rect'position .jon' any patientZ v 1 x head. J-Xfterfsuch adjustment:otthe frame the lens pocketsimay beindependentlyad justed latera'llyzof the. traine by turning'the" finger-pieces {L8 and. 5.1,. and ,they also be. adjusted vertically relativeto each {other by" turning the ,fingenpiece 155, 21 11 otthe'se adjustments.being indicated-.by eie.;'sa1@ 7 i i I means described. The trial lenses mayfthns beproperly positioned;and centered relative 1* to the :eyeand'the various ad ustments. an", readxfrom the, indicating means at one set-" ting. The adjusting parts .a're'largelyele ratedri-n a plane welli abow'ethe line of sight out interference with the vision. 5

for convenience in adjusting the same with- As shownein 'the drawings the" new "is I to a large extent constructed of rod or-iwire members; whichmay be tuhularnin form; it I economical form ofstructure,"The-remain so desired, thus providing for alight and ing parts are likewiseof a comparatively light "construction consistent with thefri- -f' gidity necessary for durabillty and accu y nd it is apparent h t the v rious 7 ;i bridgecomprisingja pair of. parallel bars connected ad acent "their icenters and ends,

myinvention:

:91. In an ophthalmic test lens frame, a

inner and outerheads slidably supported for II element upon js'aid 'head and a, nose ,20

independent movement -upon' the bars on each- .side' or their-central portion, temple members carried by the outer heads, lens supporting elements depending from each ofthe inner heads, one ofsaid elements being vertically adjustable upon its head, sepa rate operating membersengaging the last "sitionsof saidfllens pocket heads,qa device mentioned head- 'onei'of which is adapted to move .the ,headZupon; theigu'ides and .the other to move theiadjustable lens supporting carried by the bridge.

111ran"ophthalmictest lens frame, a

bridgecomprising a pair of parallel guides connected adjacent their centers] and ends,

i one of the guides having rack. oneach side I of its central connection, heads independent slidably upon the opposite guide,' pinions a carried by-said heads'and adapted to travel I 'qupon saidir'acks to.effect independent adjnstmentof the'heads,v lens holding elements carriedfby said heads, one of said elements being adjustable upon its head, a' nose piece a.

V supportedby' thebridge and temple means including bars extendinglongitudinally bei tweensaid parallelg'uides and having heads ontheir, inner ends independently adjust- I abIeYupOnthe guides, j o V 3.;Inani ophthalmic testlens frame, a

' [bridge comprising parallelzguide bars, :tie

members connecting said," bars" in spaced relation: at theircentral {and endportions, a pair of, heads slid'ablysupported "between said bars onjeach side of said central portion,-

armfdcpending from one of the heads of 'e'ach vp'aiiggan upwardly :openmg i jlcns'pocketone'ach arm, a temple piece fixed 1 Ito; the oth enhead' ot'each of said pairs and ,sli'dably supported in said end 'tle members, "and a'nos'epiece adjustably carriedby the central tie member.

, M r p "bridge comprlsmg parallel gulde bars, tie

4. 1 1 an ophthalmic est-in s name, a

' members, connecting said barszin spaced relation} at their centralandendvportions, a

pair "oil heads slidablysupported between said bars on each side of saidgcentral portion, H I an armdependmg from oneof the-headsof offeach'pair, a lens pocket onceach .arm,

means r011- jindependently adjustingv and ini Qdicatingfthe. positions of said; lens pocket tie memben piece heads,atemple piecefixed to the other head oraiuior saidpairs and slidably supported in the.corresponding end tie member, andanoseplece ad ustably 5. In an ophthalmic .testzilens "frame, a bridge C'Olnpilslll'g parallel guide bars,'.t1e members COIlllCt1]1g,Sa)1Cl btIS 1n spaced-re.-

carriedb'y thexcentral" f; a

lationitlieir central/and endvportions, 7

for adjusting andinclicating the vertical poa sition of one of s'a'idlens pockets, a temple piece fixed to the other head of eachlof said" pairsqand slidably supported in-the' corresponding end tie member, and a substanc tially vertical limb adjustablyv carried by the central ti-e member and provided with o a nosepiece; c j t .7

' 6.111 an ophthalmic test lens frame, a bridge comprisinghparallel guide bars, 3 tie members connecting said bars in-spac'ed 'rela tiontat' their central and-end :p'ortionsfa pair of independently.movable-heads slidably supported between said bars on each side ofsaid central portion, an "arm depend i 7 'ing from one of the heads of each pair,

lens pocket on eacharm, independent rack and'pi-nion means for laterally ad usting the positions of said lens pocket he'adsjan'd means for indicating the "positions "of adjustment thereofla device for-adjusting indicat-V ing tlle'VGItlCELl'POSliDlOllQf one of said len'spocketsi'on its head, a temple piece fixed to the other-{head of each of said pairs and slldably supported in the 'correspondin'gend tie member, a temple bon pivotally' sup portedrfor vertical movement .on the outer end ofeach temple piece, and a substantially vertical limb adjustably carried the cen tral tie-member andipro'vide'd with anosepiece adjustable thereonfromfront to rea of the frame. 7

7. In an ophthalmic test lens frame,a

bridge including a pair or parallel guides and tie members therefor adjacent the ends thereof, temple bars adjustable on said guides and extending longitudinally there-Q '7 between and through said tie. membersfa" pair of arms slidably 'disposed upon the 7 bridge, a lens support on each armanda noseplece carried by said bridge.

CLARENCE M. s rnvnnson. 

